All names: UCAC4 766-041555, GALEX J082535.3+630653, PG 0821+633, FBS B 664, Gaia DR3 1090742064769027072, Gaia DR2 1090742064769027072, TIC 73381663, FBS 0821+633, Gaia EDR3 1090742064769027072, 2MASS J08253541+6306531, WDJ082535.42+630653.41, WD 0821+632
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 25 35.27 (0.02) | 08 25 35.27 (0.03) | 08 25 35.27 | 08 25 35.42 (0.02) | 08 25 35.27 | 08 25 34.90 | ||||||
| Declination | 63 06 53.70 (0.02) | 63 06 53.69 (0.04) | 63 06 53.70 | 63 06 53.41 (0.02) | 63 06 53.69 | 63 06 48.96 | ||||||
| Spectral type | DA | DA | DA2.9 | DA4 | ||||||||
| Effective temperature | [K] | 16393.0 | 18306.0 | 17480.0 (292) | 16451.0 (145) | |||||||
| log(g) | [cgs] | 7.84 | 8.06 | 7.90 (0.05) | 7.86 (0.009) | |||||||
| Mass | [M☉] | 0.531 | 0.632 | 0.56 (0.03) | 0.538 (0.006) | |||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 0.1116 | 0.1140 | |||||||||
| log(H/He) | ||||||||||||
| log(C/He) | ||||||||||||
| log(Ca/He) | ||||||||||||
| log(Ca/H) | ||||||||||||
| log(C/H) | ||||||||||||
| log(N/H) | ||||||||||||
| log(O/H) | ||||||||||||
| log(Na/H) | ||||||||||||
| log(Mg/H) | ||||||||||||
| log(Al/H) | ||||||||||||
| log(Si/H) | ||||||||||||
| log(P/H) | ||||||||||||
| log(S/H) | ||||||||||||
| log(Sc/H) | ||||||||||||
| log(Ti/H) | ||||||||||||
| log(Cr/H) | ||||||||||||
| log(Mn/H) | ||||||||||||
| log(Fe/H) | ||||||||||||
| log(Ni/H) | ||||||||||||
| Parallax | [mas] | 10.28 (0.03) | 10.22 (0.05) | 10.28 | 10.28 (0.03) | 10.22 (0.05) | ||||||
| Distance | [pc] | 97.23 (0.3) | 97.85 (0.5) | 100.00 | 97.23 | 97.23 (0.3) | 97.85 (0.5) | |||||
| Composition | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -66.21004257 (0.03) | -66.24125615 (0.06) | -66.21 (0.03) | -66.24125615 | |||||||
| Proper motion (declination) | [mas/yr] | 17.87047535 (0.03) | 17.88405197 (0.07) | 17.87 (0.03) | 17.88405197 | |||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | 15.88 (0.07) | |||||||||||
| V magnitude | 15.85 (0.09) | |||||||||||
| R magnitude | 16.07 (0.2) | |||||||||||
| I magnitude | ||||||||||||
| J magnitude | 16.31 (0.1) | |||||||||||
| H magnitude | 15.95 (0.2) | |||||||||||
| K magnitude | 16.34 (0.04) | |||||||||||
| u magnitude | ||||||||||||
| g magnitude | ||||||||||||
| r magnitude | ||||||||||||
| i magnitude | ||||||||||||
| z magnitude | ||||||||||||
| G magnitude | 15.87 (0.002) | 15.89 | 15.87 | 15.87 (0.003) | 15.89 | |||||||
| BP magnitude | 15.81 (0.002) | 15.79 | 15.79 | |||||||||
| RP magnitude | 16.01 (0.002) | 16.01 | 16.01 | |||||||||
| Pan g magnitude | 15.74 (0.003) | |||||||||||
| Pan r magnitude | 16.02 (0.002) | |||||||||||
| Pan i magnitude | 16.34 (0.002) | |||||||||||
| Pan z magnitude | 16.57 (0.004) | |||||||||||
| Pan y magnitude | 16.75 (0.01) | |||||||||||
| E(B-V) | 0.004 | |||||||||||
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.